Apohysitis is a condition affecting children and adolescents and is a crumbling of the bone at the point the tendon attaches to. It is similar to apohysitis in the knee (Osgood schlatters disease) or at the back of the heel (Severs' diease). Apohysitis is usually something children will grow out of by the age of 16 or 17 although the condition does need to be managed properly with plenty of rest. Applying ice or cold therapy can help reduce pain and inflammation.
The olecranon process the the large bony prominence at the back of the elbow on the ulna forearm bone. It is usually fractured from a direct impact or fall onto a bent elbow.